Line-spacing mechanism.



I H. A. FOOTHORAP.

. LINE SPAGING MECHANISM. APPLICATION FILED MAY 24, 1911.

1,089,465. Patented Mar.10,1914,

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t ti

tion of the adjustingscrew in Fig. 1.

i i. rm lth "premierit i To all whom it may concern .ee it known that if, HARRY A; Foo'rHonAr, citiren of the United States, residing at 'ishur gj in the county of Dauphin and of Pennsylvania, have invented cer' tain new and useful Improvements in Line Spacing ltlechanism', or i li.ich"'tlie following is a specification.

This inventionrelates to an improvement in line spacingmechanism for typewriting machines andhas forits object to produce a s'imple, 31ld-ill6lfii3 line spacing" mechanis'nil, which be manufactured at small cost and readily assembled and which may be quickly set tor any esired width of spacing.

A subordinate object of the invention is to'sirnplify the structure by mounting both thefjlihe space rocker "n he stop from the platen"spindle,v so that the single screw, which ordinarily holds the thumb Wheel in place; will serve. to retain the entire assemblageof line space parts, with the eXcepfor the stop.

In the accompanying drawings: Figure 1 is an end elevation of the platen carriage of a well known typ'ewriting machine with the platen and my improved line spacing mech anism assembled thereon, the parts being in normal position. Fig. 2 is a similar view with the parts in the positions they assume at the end of the line'space movement. The sto in Fig. Qis shown adjusted to ash ,htly di "erent position from that occupied y it Fig. 3 is a section'on the line 3.-3 of Fig. 1, With some arts broken away and others inelevjation; *ig. 4 is a section on the line H of Fig. 1. Fig.5 is a detail groupof disassembled elements. Fig. 6 is' a detail elevation of'th'e line space Wheel, and Fig.7 is adetail view of there taining device for the rocker retracting 1' indicates the carriage of a typewriter 1n the end walls 2 of \vhich the spindle 3 of the cylindrical platen] kt is afi'orded bearings. Beyond the dutside of one or the end walls f2,the spindle?) is formed with a reduced portion 5,: which defines a shoulder 6, and with. a' Still further reduced extremity 7 wliiehfdefines a'second shoulder 8. At dia- 4 metrically, opposite pointsi the reduced part of the spindle, immediate if adjacent to Y the shoulder 8, v is 'cut away or flattened, indicatedat 9. The extremity of the spindle 3 :ennnrsnuho, PEN'NS'EL'V Z-i'nnnrsnnne, rrenivsriavnnia n. CQL-itlE-ORATIUN A. or

Specificatioh of Letters Patent. Application filed May 24. 1911.

A'NEA,: nests-non fro nIoniimrnv Serial No. 629,133.

is internally threadedfor the reception o't a head retaining screw lOQwhich holds in place the line spacewvheel 11, having "a' roughened knurled or toothed peripherv 1 2 and a hub 13, upon which is secured, in any. approved manner, a rubber or other suit able thumb Wheel 14, by inea'nsof which the platens: may be freely rotated, as is 'Well understood in'the art; The line space wheel l1 formed in its inner face with a cavity which receives the reduced extremity 7 and the squared or flattened end of thejreduced portion 5 of the spindle andconforms to said flattened portion to prevent the wheel from turning on the spindle or, stated otherwise, to compel. the platen spindle and line. space Wheel to rotate in unison. l

Between the inner face'of the linespace Wheel and theshonlder 6 of the platen s indie; the'line-space rocker 16 andthe linespace stop member 17 are rotatably mounted on the reduced portion 5 of the spindle, a Washer 18 being preferably interposed be tween the rocker l6'and the adjacent end wall 2 of the carriage. Fulcru med adjacent to the outer 'end of the rocker 16 and spaced therefrom by a washer l9, i. a hne-spacele ver 20formed. at its outer end with a thumb piece 21, and at its inner end-with ja beak 22 and a check lug 28. Normallypthe check lug 23 of the line-space lever 20 rests against theperiphery of the linespace heel 11 and limits the disengaging movement of the line-1 space lever but retains the bealr22 adjacent to, though disengaged from, the periphery of the line-spacevvheel. when the finger piece21 otthe line-space lever is moved back, the rocking of the lever on its axis en-Z gages the beak 22 with the linerspa'ce wheel, and the wheel, line-space lever and linespace rocker 16 all oscillate in unison to e'ffeet the line-space movement of the platen.

limited by disengagement ofa stop pro-. jectionQd on the rocker 16, with theline space stop 25 projecting from the stop mein-j ber '17 and deflected laterally into the path of the projectionQd on the rocker, as clearly shown in Figs. 2 andB. i p

In a mechanism oftliis character which contemplates the employment of a single line-space stop, it is desirable to mnke pro' vision for a comparatively wide range of adjustment of said step to accommodate various widths of spacing." I therefore extend Pateiiited This jlinespaec movementbf the art-sis,

ice

. movement and such retraction. is limited by,

- that practically to expressly reservethe illustrated structure,

.justing screw-28 and rearwardly from the stop member 17 an arm '3 26, at the end of which is swiveled a nut 27 engaged by a stop adjusting screw 28, having a knurled head 29, a flange 30 and an intermediate unthreaded portion or neck 31, received within the plain'bore of a stud 32, screwed into the end wall 2' of the carriage, as shown in Fig. 4:. y rotating the screw '28 through the-manipulation of its head" 29,

the nut 27 is caused to travel longitudinally of the screw 28, carrying with it the arm 26 of thestop member 17 and oscillating said member about the platen spindle as an axis, to adjust the positlon of the line-space stop 25. 9 Obviously, by the adjustment of the line-space stop in the manner specified, the throw of the line-space rocker 16 and the consequent line-space movement of the platen 4 may be varied to secure any de-' sired width of spacing within comparatively wide limits, Accidental rotation of the'adconsequent disturbance of the predetermined position of the stop 25 is revented by a binding screw 33', screwe into the stud 32 and bearing upon the neck of the adjusting screw.

To provide for the retraction of the linespace rocker and the line-space lever carried thereby, said rocker is provided with a radial ar1n.34 tofgvhich 18 attached one end of a spring 35,whose opposite end is S8. cured to"a spring retaining member 36, secured to the';-wall 2 by a screw 37 and having a laterally-deflected arm 38 which extends under thel'ower' edge of the wall" 2. *The spring 35 obviously tends to retractthe parts whenthey. are released after a line ,space a stop in 39 projecting the pat of the arm 34.

' It will be observed that I have produced a simple and eificient line spacing mechanism, capable of universal adjustment, and

from the wall 2 in ported from the spindle of the platen and retained in place by a single screw.- The spindle constitutes a single axial support for both the line-space rocker and the stop merry her as well as the line-space wheel, all of which parts are retained in their proper relative ositions by the screw 10, which secures a line space wheel to the spindle. It is thought that from the'foregoing, the construction, arrangement, mode of operation' and advantages of the illustrated mech anism will be clearly understood, but while the present embodiment of the invention is' thought at this time to be preferable, I wish the right to make such and variations of as may come fairly within the scope of the protection prayed. What I claim is:

changes, modifications,

' swing about a the-entire mechanism is supthe line space wheel,

1. The combination witha platen and its spindle, of an osclllatory line spacing device r on the spindle, and an adjusting screw mounted to swing laterally from a relatively fixed part and operative to swing the sto member about the axis of the spindle to di ferent positions of adjustment.

2. .The combination with a platen and its spindle, of an oscillatory line spacing device and a coacting stop member, both mounted on the platen spindle to swing about the same as an axis, a relatively fixed part, an

- adjusting screw having a swiveled mounting on said fixed part to permit said screw to transverse axis, and a swiveled nut carried by the stop member and engaged by the screw;

3. The combination with a platen and its spindle, said spindle being reduced to form a shoulder, of a line space wheel secured to the end of the spindle, a line space rocker and a coacting stop member, both mounted on the spindle between said shoulder and the line space wheel, and a line space lever -mounted on the rocker to engage the line space wheel.

4. The combination with a laten and its spindle, said spindle being re need to form a shoulder, of a line space wheel secured to the end of the spindle, and a coacting stop member, both mounted on the spindle between said shoulder and the line space wheel, a line space lever mounted a line space rockcr.

on the rocker to engagb the line spacewheel,

and an adjusting screw operative to swing the stop member about the spindle to di ferent positions of adjustment.

5. The combination with a platen and its spindle, the latter being formed with a shoulder, of a line space wheel, a screw retaining said line space wheel on the end of thespindle, a line space rocker and a coacting stop member, bothloosely mounted on the spindle between said shoulder and the line space wheel, and a line space lever car- 'ried by the rocker and arranged to engage the line space wheel. 1 6. Thecombination with a platen andits shouldered spindle, of a line spacewheel, a screw. retaining the line space wheel on the end of the spindle-{athumb wheel carried by the line space wheel, a line space rocker and a coacting stop member, both swung from the spindle between theshoulder there of and the line space wheel, lever mounted on the rocker to engage the line space wheel. 4

7. The combination with a platen and its shouldered spindle,of a line space' wheel, a screw retaining the line spacewheel. on the end of thespindle, a thumb wheel carried by a line space rockerand a coacting stop member, both swung from the spindle between the shoulder thereof and the line space wheel, a line space lever mounted on the rocker to engage the line and a line space.

space wheel, and an adjusting screw for the stop member.

8. The combination with a platen and its spindle, said spindle being reduced to form a shoulder of a line space wheel secured to the end of and a coactingstop member, both mounted on the spindle between said shoulder and the 15 spindle, of a line space rockerand a coactthe spindle, a line space rocker ing stop member, both swung from the spindle, a line space Wheel, a screw retaining the line space wheel on the spindle and serving through the mediumof the line space wheel to confine the rocker and stop mem- 20 her, a line space lever mounted on the rocker to engage the line space wheel and an adjusting screw for the sto member;

In testimony whereof aflix my signature in presence of two witnesses.

HARRY A. FOOTHORAP. Witnesses WILLIAM J. EVERT, HARRY L. MORRISSEY.

Copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents. Washington, D. C. 

